EP0456951B1 - Werkzeugmaschine, insbesondere zum Herstellen von mechanischen Teilen aus Blech wie Rollen, Räder und dergleichen - Google Patents
Werkzeugmaschine, insbesondere zum Herstellen von mechanischen Teilen aus Blech wie Rollen, Räder und dergleichen Download PDFInfo
- Publication number
- EP0456951B1 EP0456951B1 EP90830225A EP90830225A EP0456951B1 EP 0456951 B1 EP0456951 B1 EP 0456951B1 EP 90830225 A EP90830225 A EP 90830225A EP 90830225 A EP90830225 A EP 90830225A EP 0456951 B1 EP0456951 B1 EP 0456951B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spindle
- quill
- toolhead
- respect
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 239000002184 metal Substances 0.000 title claims abstract description 8
- 230000005540 biological transmission Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000020347 spindle assembly Effects 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/04—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass for both machining and other metal-working operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/26—Making other particular articles wheels or the like
- B21D53/261—Making other particular articles wheels or the like pulleys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/02—Making articles shaped as bodies of revolution discs; disc wheels
- B21H1/04—Making articles shaped as bodies of revolution discs; disc wheels with rim, e.g. railways wheels or pulleys
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49453—Pulley making
- Y10T29/4946—Groove forming in sheet metal pulley rim
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
Definitions
- the invention relates to a machine tool, in particular for the manufacturing, from sheet metal, of mechanical parts such as pulleys, wheels and similar, according to the preamble of claim 1.
- the object of the present invention is to provide a machine which, working on the blank, constituted of sheet metal, can perform a plurality of different plastic deformation operations (deep-drawing, roll-forming, etc.) and shaving operations (turning, boring, etc. ) without having to move or re-position the piece.
- a machine tool according to the preamble of claim 1 is known, in particular for manufacturing from sheet metal mechanical parts such as pulleys wheels and the like which comprises : - a first chuck head quill with vertical axis, having internally and coaxially mounted to it a tool head spindle which is independent of rotation with respect to said quill and which is slidably commanded by a hydraulic cylinder; - a second chuck head quill contra-positioned exactly coaxially to said first quill and rotatably mounted to a support element which is slidably mobile in a direction parallel to its axis and commanded up and dawn by a powerful hydraulic jack; - a plurality of mobile cross-sliding tool rests, the two facing ends of said quills being capable of receiving two hollow chucks which, during operation, will be pressed one against the other.
- US patent No. 4,040,281 discloses an apparatus for manufacturing split pulleys which comprises a spindle assembly, supported by a frame, having an upper spindle and a lower spindle for supporting a blank to be split there between. Rotatable tools are provided and are movable relative to the blank supported by the spindle assembly.
- fig. 1 denotes the sturdy frame (1) comprising a horizontal deck (2), below and mounted to which is a support (3), to which in turn is rotatably mounted a chuckhead quill (4) with verticle axis.
- a pulley (5) is fitted to the quill (4), being a component of the mechanical chain-drive transmission via which same quill is rotated by a motor (6).
- a tool head spindle (7) Internally to the quill (4) is mounted a tool head spindle (7) exhibiting at its top end a threaded mount for the attachment of a tool or tool head.
- Said spindle (7) is rotatably housed inside a sleeve (8), which is in its turn free to slide axially inside the quill (4).
- the spindle (7) is secured to the tubular stem (9) of a coaxial annular section hydraulic cylinder (10), and is thus slidably constrained.
- the cylinder (10) is mounted to the box (11), which is solidly mounted to the deck (2), and has the purpose of producing the axial movements of the spindle (7), which is rotatably housed at its bottom end inside a barrel (12), in its turn able to slide freely in an axial direction with respect to the body (13).
- the bottom end of the spindle (7) exhibits a projection (14) of appropriate axial length, which, together with a corresponding sliding seat (15) shaped into the body (13) constitutes an axially-sliding pair.
- the bases of three guide columns (17) are mounted, parallel to the axis of the coaxial quill (4) and spindle (7): on these guide columns (17) is mounted a strong support element (18), which is slidably mobile in an axial direction.
- the guide columns (17) which are disposed as in the corners of an equilateral triangle, with the quill (4) at their centre, are permanently connected by means of a strong joining element (19).
- a chuckhead quill (20) Internal to which, in exactly the same way as for spindle (7) housed internally to quill (4), a second toolhead spindle (21) is housed.
- spindle (21) is also rotatably mounted inside a coaxial barrel, which in turn is free to slide in an axial direction within the quill (20).
- the support element (18) is secured to the bottom end of the tubular stem (22) of a powerful hydraulic jack (23), which is disposed coaxially with respect to shafts (20) and (21) and is perfectly aligned with the axis of shafts (4) and (7).
- the jack (23) is of annular section and its body is solidly fixed to the element (19).
- the spindle (21) is fixedly connected to the tubular stem of a coaxial hydraulic cylinder (24), whose body is fixedly solid to the hydraulic jack (23) with tubular elements (25) interposed.
- a movable sliding pair (26) is positioned between the element (25) and the part of the spindle (21) housed inside it to permit the same spindle (21) to slide freely only in an axial direction with respect to the quill (20).
- the bottom ends of quills (4) and (20), positioned so that they are exactly facing one another, are each capable of holding chucks.
- Each tool rest (27) is moved slidably along its slide (28) by action of a hydraulic cylinder (29).
- Each tool rest is fitted with a tool head or turret (30) rotatably mounted on a pivot whose axis is parallel to those of quills (4) and (20) and spindles (7) and (21).
- the rotation of the turret (30) around the pivot (31) is commanded via a small hydraulic cylinder (32).
- Each turret can bear several tools. In this embodiment rotating tools (34) for roll-forming or cutting, and fixed tools for turning (33) are used.
- a hollow chuck (35) is mounted to the top end of the quill (4).
- a similar hollow chuck (36) is mounted to the bottom end of the second quill (20).
- the blank flat or in a previously deep-drawn hollow axial-symmetric shape, is clamped between the two chucks and held in position between them by means of the considerable force exerted by the hydraulic cylinder (23). With the blank held tight in this way, the selected tools on the toolheads ot turrets (30), which are positioned on the tool rests (27), can perform their tasks, as may the tools or toolheads which can be mounted respectively on the top end of the spindle (7) and the bottom end of the spindle (21), if this is required.
- the machine equipped with the appropriate tools, may be used in the performing of a wide selection of tasks, and in particular in the manufacturing of mechanical parts for motor transmission.
- a sheave for chain-driven transmission is manufactured out of a flat metal sheet of constant thickness (37).
- a hollow chuck (35) is mounted, which is equipped with a self-centring three-jaw device (38) for the external gripping of the blank.
- Said self-centring device (38) is operated by means of the axial movements of a centring piece (39) attached to the end of the toolhead spindle (7), which interacts directly with the jaws of the self-centring device (38).
- Said self-centring device has at its top end a punch (40).
- a hollow chuck (36) is mounted, around which a coaxial annular mobile element (41) is eternally and coaxially positioned: this element is pushed in a downward direction by the pressure of a spring (42).
- the blank (43) By action of the roll-forming tools (44) mounted on the toolhead or turret (30) of one of the sliding toolrests (27), the blank (43) (previously coaxially deep-drawn on the chuck (36)) can undergo a series of plastic deformations aimed at producing a corrugation (45) in the part of the blank where successively small "V" grooves (48) will be formed.
- the corrugations (45) are crushed in a radial direction so that a cylindrical area is obtained where the thickness of the blank is notably increased with regard to previously, as shown in fig. 4c.
- the "V" grooves (48) are formed, while, commanded by the hydraulic cylinder (10), the spindle (7) thrusts the punch (40) upwards, completing the formation of the internal part of the blank, which will constitute the hub of the pulley.
- the self-centring jaw device (38) is activated at the same time as the punch (40) is lowered. Then the chuck (36) is raised by action of the jack (23) so that the rolling tools (49) and (53) can make, one after the other, their two grooves (50) for V-belts.
- a cutting-off tool (51) mounted on a tool rest (27) and a cutter-reamer (52) mounted on a toolhead fixed on the bottom end of the toolhead spindle (21), are brought into use.
- the rotation of the quill (4) is stopped and the finished piece can now be removed from the self-centring jaw device (38) by raising the spindle (7) and thus opening the jaws.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Drilling And Boring (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Gripping On Spindles (AREA)
- Milling, Broaching, Filing, Reaming, And Others (AREA)
- Forging (AREA)
Claims (4)
- Eine Werkzeugmaschine, insbesondere zum Herstellen von mechanischen Teilen aus Blech wie Rollen, Räder und dergleichen, die aufweist:- einen robusten Rahmen (1);- die erste von zwei Spannfutterkopf-Frässpindelhülsen (4) mit vertikaler Achse, drehbar auf besagtem Rahmen (1) angebracht, mit innerer, koaxial angebrachter Werkzeugkopfspindel (7), die von der Rotation der besagten Frässpindelhülse (4) unabhängig ist und die durch einen koaxialen Hydraulikzylinder (10) mit ringförmigem Durchmesser verschiebbar ist; eine Vorrichtung zur Verhinderung der Rotation der besagten Spindel (7) um ihre eigene Achse mit Bezug auf den genannten Rahmen (1);- die zweite von zwei Spannfutterkopf-Frässpindelhülsen (20), vollkommen koaxial zu der ersten Frässpindelhülse (4) angeordnet und drehbar auf einem starken Trageelement (18) angebracht, das auf Führungssäulen (17) parallel zu seiner Achse verschiebbar beweglich ist und, das auf den besagten Führungssäulen (17) verschiebbar auf und ab bewegt wird durch eine kräftige Hydraulikwinde mit ringförmigem Durchmesser (23), dessen Gehäuse fest mit den besagten Führungssäulen (17) verbunden ist; eine zweite Werkzeugkopfspindel (21), koaxial mit der besagten zweiten Frässpindelhülse (20), in derem Inneren angebracht, ihr gegenüber frei drehbar und durch einen zweiten koaxialen Hydraulikzylinder (24) verschiebbar beweglich; eine Vorrichtung zur Verhinderung der Rotation der besagten Spindel (21) um ihre eigene Achse mit Bezug auf den genannten Rahmen (1);- eine Vielzahl von querverschiebbaren Werkzeug-Planschlitten (27), die auf besagtem Rahmen auf festen Gleitschienen (28) verschiebbar angebracht sind; die beiden Stirnenden der besagten Frässpindelhülsen (4) und (20) sind dazu geeignet, zwei Hohlspannfutter (35) und (36) aufzunehmen, die während des Arbeitsschrittes gegeneinander gepreßt werden;
dadurch gekennzeichent, daß:
sie am oberen Ende der genannten ersten Frässpindelhülse (4) ein erstes Hohlspannfutter (35) aufweist, das mit einer selbstzentrierenden Dreibacken-Vorrichtung (38) zum äußeren Greifen des Werkstückes ausgestattet ist; die genannte Selbstzentrier-Vorrichtung (38) wird durch axiale Bewegungen des Zentrierstückes (39) in Betrieb gesetzt, das an das Ende der Werkzeugkopfspindel (7) befestigt ist, die direkt auf die Backen der Selbstzentrier-Vorrichtung (38) einwirkt; am unteren Ende der genannten zweiten Frässpindelhülse (20) ist ein zweites Hohlspannfutter (36) angebracht, um das herum ein koaxiales, ringförmiges Element (41) äußerlich und koaxial angebracht ist: Dieses Element wird durch den Druck einer Feder (42) abwärts gedrückt. - Eine Werkzeugmaschine gemäß dem Anspruch 1, wobei der genannte Rahmen (1) eine Ebene (2) aufweist, die auf dem Boden auf robusten Pfosten (16) steht und auf die in der Mitte der Unterseite ein Träger (3) angebracht ist, auf dem die besagte erste Frässpindelhülse (4) drehbar angebracht ist; sie weist außerdem auf ihrer Oberseite die drei Führungssäulen (17) auf, die an ihren unteren Enden an der besagten Ebene (2) befestigt sind und die gemäß den Ecken eines gleichseitigen Dreiecks in gleichem Abstand von der genannten Achse angeordnet sind.
- Eine Werkzeugmaschine gemäß Anspruch 1), wobei das obere Ende der besagten ersten Werkzeugkopfspindel (7) zur Aufnahme eines Werkzeuges oder eines Werkzeugkopfes geeignet ist, sich in der Nähe des oberen Endes der Frässpindelhülse (4) befindet und drehbar in einer Büchse (8) enthalten ist, die im Innern der besagten Frässpindelhülse (4) frei gleiten kann; die besagte Werkzeugkopfspindel (7) ist an dem Rohrschaft (9) des besagten Hydraulikzylinders befestigt; eine Vorrichtung zur Verhinderung der Rotation der besagten Werkzeugkopfspindel (7) mit Bezug auf den Rahmen (1), die ein Schiebepaar aufweist, das das axiale Gleiten erlaubt, zwischen dem unteren Ende der Werzeugkopfspindel (7) und dem koaxialen Schiebesitz (15) angebracht und in ein an besagtem Zylinder (15) befestigtes Gehäuse eingepaßt ist, welcher wiederum fest an dem Träger (3) angebracht ist, an dem die besagte erste Frässpindelhülse (4) drehbar angebracht ist.
- Eine Werkzeugmaschine gemäß dem Anspruch 1), wobei das untere Ende der besagten Werkzeugkopfspindel (7) zur Aufnahme eines Werkzeuges oder eines Werkzeugkopfes geeignet ist, sich in der Nähe des unteren Endes der besagten zweiten Frässpindelhülse (20) befindet und drehbar in einer Büchse enthalten ist, die im Innern der besagten Frässpindelhülse (20) frei gleiten kann; das obere Ende der besagten Werkzeugkopfspindel (21) ist am Rohrschaft des besagten zweiten Hydraulikzylinders (24) sicher befestigt; eine Vorrichtung zur Verhinderung der Rotation der besagten Werkzeugkopfspindel (21) mit Bezug auf den Rahmen (1), die ein Schiebepaar (26) aufweist, das das axiale Gleiten zwischen der Spindel (21) selbst und dem koaxialen röhrenförmigen Element (25) erlaubt, durch das das Gehäuse des besagten zweiten Zylinders (24) koaxial an dem Gehäuse der besagten Hydraulikwinde (23) befestigt ist.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/523,037 US5031296A (en) | 1990-05-14 | 1990-05-14 | Machine tool for manufacturing pulleys or wheels |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0456951A1 EP0456951A1 (de) | 1991-11-21 |
EP0456951B1 true EP0456951B1 (de) | 1994-08-10 |
Family
ID=24083424
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90830225A Expired - Lifetime EP0456951B1 (de) | 1990-05-14 | 1990-05-18 | Werkzeugmaschine, insbesondere zum Herstellen von mechanischen Teilen aus Blech wie Rollen, Räder und dergleichen |
Country Status (5)
Country | Link |
---|---|
US (1) | US5031296A (de) |
EP (1) | EP0456951B1 (de) |
AT (1) | ATE109694T1 (de) |
DE (1) | DE69011510T2 (de) |
ES (1) | ES2062491T3 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1261380B (it) * | 1993-12-10 | 1996-05-20 | Agla Spa | Procedimento di rullatura per la realizzazione di pulegge, e attrezzo impiegato in tale procedimento |
JP3325184B2 (ja) * | 1996-07-01 | 2002-09-17 | 三菱電機株式会社 | 遊星減速形スタータのヨークの製造装置および製造方法 |
NL1005319C2 (nl) * | 1997-02-20 | 1998-08-24 | Johan Massee | Inrichting voor het bewerken van een werkstuk. |
EP0955110B1 (de) * | 1998-05-07 | 2004-04-07 | Leico GmbH & Co. Werkzeugmaschinenbau | Verfahren zum Drückwalzen und Drückwalzvorrichtung |
EP2653244B1 (de) * | 2012-04-20 | 2014-12-17 | Leifeld Metal Spinning AG | Verfahren und Vorrichtung zum Umformen eines Werkstücks |
JP7243254B2 (ja) * | 2019-02-12 | 2023-03-22 | 株式会社デンソー | プーリの製造方法及び製造装置 |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1906574A1 (de) * | 1969-02-10 | 1970-08-20 | Zatko Metal Products Company | Verfahren und Vorrichtung zur Herstellung von Riemenscheiben |
US3852863A (en) * | 1973-10-19 | 1974-12-10 | Aspro Inc | Method of making multi-groove pulleys |
DE2358364B1 (de) * | 1973-11-23 | 1975-05-15 | Leifeld & Co, 4730 Ahlen | Drückmaschine zur Herstellung von Keilriemenschefben |
US4040281A (en) * | 1976-04-22 | 1977-08-09 | Eaton Corporation | Pulley splitting machine-control system |
US4055977A (en) * | 1977-02-07 | 1977-11-01 | Haswell John W | Method and apparatus for making double groove pulleys |
US4134285A (en) * | 1977-08-12 | 1979-01-16 | The Rogers Mfg. Co. | Method and apparatus for producing multiple groove pulleys |
US4297869A (en) * | 1979-09-10 | 1981-11-03 | U.S. Industries, Inc. | Apparatus for fabricating pulley rims |
US4404829A (en) * | 1980-01-10 | 1983-09-20 | Vanco Dorakovski | Method and apparatus for the manufacture of pulleys |
DD159047A1 (de) * | 1981-05-25 | 1983-02-16 | Karlheinz Wenke | Verfahren und vorrichtung zum einziehen napffoermiger metallhohlkoerper |
JPS5854898B2 (ja) * | 1981-06-18 | 1983-12-07 | アイシン精機株式会社 | Vリブドプ−リの製造方法 |
JPS58110146A (ja) * | 1981-12-24 | 1983-06-30 | Kanemitsu Doukou Yousetsushiyo:Goushi | 板金製ポリvプ−リ及びその製造方法 |
JPS5964132A (ja) * | 1982-10-04 | 1984-04-12 | Fuji Kiko Co Ltd | 多条vプ−リの成形方法及びその装置 |
JPS60134B2 (ja) * | 1983-03-14 | 1985-01-05 | 合資会社金光銅工熔接所 | 板金製ポリvプ−リの製造装置 |
DD215485A1 (de) * | 1983-04-14 | 1984-11-14 | Gotha Lufttechnik | Verfahren und vorrichtung zur herstellung rotationssymmetrischer hohlteile mit kragenfoermigem ansatz |
DE3402301A1 (de) * | 1984-01-24 | 1985-08-01 | Fritz Prof. Dr.-Ing. 5450 Neuwied Fischer | Vorrichtung und verfahren zum drueckwalzen |
DE3545506A1 (de) * | 1985-12-20 | 1987-07-02 | Man Technologie Gmbh | Werkzeug zum drueckwalzen von hohlzylindrischen werkstuecken |
-
1990
- 1990-05-14 US US07/523,037 patent/US5031296A/en not_active Expired - Fee Related
- 1990-05-18 EP EP90830225A patent/EP0456951B1/de not_active Expired - Lifetime
- 1990-05-18 DE DE69011510T patent/DE69011510T2/de not_active Expired - Fee Related
- 1990-05-18 ES ES90830225T patent/ES2062491T3/es not_active Expired - Lifetime
- 1990-05-18 AT AT90830225T patent/ATE109694T1/de active
Also Published As
Publication number | Publication date |
---|---|
US5031296A (en) | 1991-07-16 |
DE69011510D1 (de) | 1994-09-15 |
EP0456951A1 (de) | 1991-11-21 |
ATE109694T1 (de) | 1994-08-15 |
ES2062491T3 (es) | 1994-12-16 |
DE69011510T2 (de) | 1995-03-09 |
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